Abstract:
This paper presents a method based on elliptic curve digital signature to improve the communication security of multimedia terminals in the IP-based network deployed by H.323 protocols set, including authentication, integrity, privacy and not repudiation. The elliptic curve cryptography (ECC) and a digital signature based on ECC are given. Fast algorithms relating to ECC are then designed and implemented, including module multiplication, point addition, scalar multiplication of point etc.. A software engine supporting various security level is built. This makes it possible that ECC’s practical security application in accordance with H.235 protocol and H.323 signaling procedure.
Key words:
Multimedia communication,
Elliptic curve,
Discrete logarithm,
Digital signature,
Cryptography
摘要: 提出一种基于椭圆曲线数字签名方法,研究由H.323协议集部署的基于分组网络的多媒体终端通信的安全与保密,包括认证、隐私性、完整性及不可否认性。给出椭圆曲线密码体制(ECC)的定义与椭圆曲线数字签名方案,设计与实现了有限域GF(p)上与(ECC)相关的快速算法,包括模乘、点加、点积等算法,由此可构造出一个实用的支持各种安全级的软件引擎。使得结合H.235协议与H.323信令流程的ECC安全应用变得实际可行。
关键词:
多媒体通信,
椭圆曲线,
离散对数,
数字签名,
密码学
CLC Number:
LU Chen; DONG Xiuzhen; TIAN Chunming; ZOU Huiling. Communication Security and Secret Based on Elliptic Curve Cryptography in Packet Networks[J]. Computer Engineering, 2006, 32(21): 133-135.
卢 忱;董秀珍;田春鸣;邹慧玲. 基于椭圆曲线密码的分组网通信安全与保密[J]. 计算机工程, 2006, 32(21): 133-135.